import type { ApiWithParams, PaginationListColumnType } from '@/types'
import { removeEmptyFields, coerceToString } from '@/helpers'

export const ALL_FILTER_OPTION_CODE = '__all__'

export type PaginatedListFilterValue = string | number | { from?: string; to?: string }
export type PaginatedListFilters = Record<string, PaginatedListFilterValue>
export type PaginatedListRow = Record<string, unknown> & { id?: string | number }

/** Which filter control a column renders. The single source of truth for mapping `column.type` to filter behavior — both the inline table-header filter and the modal accordion filter dispatch off of this instead of each re-implementing the mapping. */
export type FilterFieldKind = 'scalar' | 'range' | 'select' | 'date' | 'dateRange' | 'none'

export function getColumnFilterConfig(column: PaginationListColumnType): FilterFieldKind {
  if (!column.type || column.type === 'text' || column.type === 'number') return 'scalar'
  if (column.type === 'inputFromTo') return 'range'
  if (column.type === 'select') return column.filterItems?.length ? 'select' : 'none'
  if (column.type === 'date') return 'date'
  if (column.type === 'dateFromTo') return 'dateRange'

  return 'none'
}

export function toDatePickerValue(value?: string): Date | null {
  if (!value) return null
  const date = new Date(value)

  return Number.isFinite(date.getTime()) ? date : null
}

export function toSelectFilterSelectedKeys(value: unknown): string[] {
  return value == null || value === '' ? [ALL_FILTER_OPTION_CODE] : [coerceToString(value)]
}

export function withAllFilterOption(items: { code: string; name: string }[]) {
  return items.some((item) => item.code === ALL_FILTER_OPTION_CODE) ? items : [{ code: ALL_FILTER_OPTION_CODE, name: 'همه' }, ...items]
}

export function isAllFilterValue(value: string): boolean {
  return value === ALL_FILTER_OPTION_CODE || value === ''
}

export function getFilterTextValue(value?: PaginatedListFilterValue): string {
  return value == null || typeof value === 'object' ? '' : coerceToString(value)
}

export function getNestedFilterValue(value: PaginatedListFilterValue | undefined, field: 'from' | 'to'): string | undefined {
  return value && typeof value === 'object' ? value[field] : undefined
}

export function getFilterDateValue(value?: PaginatedListFilterValue): string | undefined {
  return typeof value === 'string' ? value : undefined
}

export function getActiveSortColumn(sort: string): string | null {
  return sort ? (sort.startsWith('-') ? sort.slice(1) : sort) : null
}

export function withRowKeys<T>(items: T[]): T[] {
  return items.map((item, index) => {
    const row = item as Record<string, unknown>
    const customer = row.customer
    const customerId = customer && typeof customer === 'object' && 'id' in customer ? (customer as Record<string, unknown>).id : undefined
    const id = row.id ?? customerId

    return { ...row, id: id != null && id !== '' ? coerceToString(id) : `row-${index}` } as T
  })
}

export function serializeFilters(filters: PaginatedListFilters): Record<string, string> {
  const result: Record<string, string> = {}

  Object.entries(filters).forEach(([key, value]) => {
    if (value === 'null' || value === '') return
    if (value && typeof value === 'object') {
      const serialized = `${value.from ?? ''},${value.to ?? ''}`

      if (serialized !== ',') result[key] = serialized
    } else {
      result[key] = coerceToString(value)
    }
  })

  return result
}

export function buildListParams({
  filterPrefix,
  filters,
  page,
  resultType,
  rowsPerPage,
  sort,
  urlParams,
}: {
  filterPrefix?: string
  filters: PaginatedListFilters
  page: number
  resultType?: number
  rowsPerPage: number
  sort: string
  urlParams: ApiWithParams
}) {
  const cleanUrlParams = removeEmptyFields(urlParams)
  const inheritedFilters =
    cleanUrlParams.filters && typeof cleanUrlParams.filters === 'object' && !Array.isArray(cleanUrlParams.filters)
      ? (cleanUrlParams.filters as Record<string, string>)
      : {}
  let params: Record<string, unknown> = {
    ...cleanUrlParams,
    page,
    pageSize: rowsPerPage,
    filters: { ...inheritedFilters, ...serializeFilters(filters) },
    sort,
    ...(resultType === undefined ? {} : { resultType }),
  }

  if (filterPrefix) {
    params = Object.fromEntries(Object.entries(params).map(([key, value]) => [`${filterPrefix}.${key}`, value]))
  }

  return removeEmptyFields(params)
}